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44 Cards in this Set

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satellites that match the earht's rotation so they can hang in a stationary position relavtive to the spinning planet below, relaying wireless transmissions between locations
geostationary communications satellites
technology of long-distance communications
telecommunications
Multiple personal computers connected on a network.
local area network (LAN)
connected by cables, which serve as pathways for transporting data between machines
node
most common type of LAN; contains copper wires that resemble those in standard telephone cables.
twisted pair
satellites that match the earht's rotation so they can hang in a stationary position relavtive to the spinning planet below, relaying wireless transmissions between locations
geostationary communications satellites
technology of long-distance communications
telecommunications
Multiple personal computers connected on a network.
local area network (LAN)
connected by cables, which serve as pathways for transporting data between machines
node
most common type of LAN; contains copper wires that resemble those in standard telephone cables.
twisted pair
A network in which a node has a tiny radio or infrared transmitter connected to its network port so it can send and receive data through the air rather than through cables.
wireless network
take care of the behind-the-scenes details so others can focus on using the network.
network administrators
large,complex networks with hundreds of computers
enterprise network systems
track and maintain healthy networks
network management system software
service that links two or more LAN's within a city
Metropolitan area network (MAN)
network that extends over a long distance
wide area network (WAN)
data is transmitted long-distance betwen networks on a collection of common pathways known as-
backbone
Hardware devices that can pass messages between networks.
bridge
Computers connected to two networks that translate communication protocols and transfer information between the two.
gateway
Programs or devices that decide how to route Internet transmissions.
routers
A Defense Department system with 24 satellites that can pinpoint any location on the Earth.
Global Positioning System (GPS)
use signals to broadcast by three or four visible satellites to determine its position
GPS receiver
specializede terminal linked to a bnaks's main computer through a commerical banking network
Automated Teller Machine (ATM)
dedicated, direct connection to the Internet through a LAN, with the computer having its own IP address.
direct connection
Network access via phone line, TV cable system, or wireless link.
remote access
Socket that allows information to pass in and out.
port
enable bits to pass through in groups of 8,16, or 32
parallel ports
require bits to pass through one at a time
serial ports
ports that are much faster and more flexible than traditional serial and parallel ports
USB and FIREWIRE(IEEE 1394)
Card that adds an additional serial port to a computer. The port is especially designed for a direct network connection.
network interface card (NIC)
A popular networking architecture developed in 1976 at Xerox
ethernet
A stream of bits.
digital signal
A continuous wave.
analog signal
Modulator/demodulator. A hardware device that connects a computer to a telephone line.
modem
installed on a circuit boarde insdie the computer's chassis
internal modem
sits in a box linked to a serial port or USB port
external modem
The standard unit of measure for modem speed.
bits per second
The quantity of information that can be transmitted through a communication medium in a given amount of time.
bandwidth
connection with much greater bandwidth than modems have
broadband connection
High-capacity cable that uses light waves to carry information at blinding speeds.
fiber-optic cables
fastest growing wireless LAN technology
Wi-Fi or 802.11b
A type of wireless technology that enables mobile phones, handheld computers, and PCs to communicate with each other regardless of operating system.
bluetooth
network that links a variety of perswonal electionic devices so they can communicate with each other
personal area network (PAN)
promises high-bandwidth connections that will support true multimedia
3G